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BURN BARRIER NO. 133A Class “B” Water Base
Fire Retardant Polyurethane Varnish

Product Description:
Burn Barrier No. 133A is a water base, fire retardant polyurethane varnish, with a semi-gloss sheen. It
is designated for use on all new or previously coated wood surfaces (except floors). The varnish will not
leach or turn white on aging or washing.

Recommended Uses:
Stir material well before using: For application to all wood surfaces, where a reduction of surface
burning characteristics is required to comply with building code requirements.

Performance Information:
Class “B” fire rated on wood when applied in two coats at 450 sq.ft./gallon. Dries by water evaporation.
Does not leach on exposure to high humidity or water. No fire hazard during application or drying. The
coating is somewhat thermoplastic. Precaution must be taken when two coated surfaces are touching each
other, to prevent sticking and blocking.

Characteristics:
Finish . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Clear
Spreading Rate . . . . . . . . . . . . . . . . . . . . . . . . .1st. coat, 450 sq.ft./gl.
                                                                               2nd. coat, 450 sq.ft./gl.
[Aggregate (total) coverage . . . . . . . . . . . . . . . .356 sq. ft./gl.]
Volume Solids . . . . . . . . . . . . . . . . . . . . . . . . . .30%
Weight Solids . . . . . . . . . . . . . . . . . . . . . . . . . .35%
Wet Film Thickness Per Coat . . . . . . . . . . . . . .3.6 mil
Dry Film Thickness Per Coat . . . . . . . . . . . . . .1.1 mil
Application Temperature
(Surface & air) . . . . . . . . . . . . . . . . . . . . . . . .60F minimum
Drying time @ 77F & 50% RH: . . . . . . . . . . . . To touch 15 to 30 minutes
                                                                                Top coat 30 minutes
                                                                                 Handle 60 minutes

Type of Cure . . . . . . . . . . . . . . . . . . . . . . . . . . .Water Evaporation & coalescence
Flash Point . . . . . . . . . . . . . . . . . . . . . . . . . . . .None to boiling
Reducer/Cleaner . . . . . . . . . . . . . . . . . . . . . . . . . Water
VOC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0.20 lbs./gl. (24 g/L)
                                                                        2nd. coat, 450 sq.ft./gl.
                                                                        Shelf Life 12 months (unopened)
                                                                        Weight per gallon 8.95 lbs.
Shipping per gallon (4 gallons) . . . . . . . . . . . . .40 lbs.
                                     (5 gallons) . . . . . . . . . . . . .48 lbs.
Application . . . . . . . . . . . . . . . . . . . . . . . . . . . .Brush, foam brush, conventional
   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .or airless spray.

Surface Preparation:
Surface preparation should be carried out according to good painting practices. All dirt, grease, oil,
wax, rust, and other foreign matter must be removed. May be applied to previously coated surfaces in
good condition. Glossy surfaces must be dulled with sandpaper or steel wool. All sanding, filling of
nail holes, etc. must be completed prior to the application of No. 133A.

Fire Hazard Classification:
Flame spread rating Class “B” when applied to wood surfaces. When tested in accordance with ASTM
E-84 (NFPA 255, ANSI/UL 723 and UBC 8-1), the coating obtained the following fire hazard
classification;

Coating System Details
Sealer – None
Base Coat No. 133A Applied at
450 sq.ft/U.S. gl. (11.0 m /L)
Top Coat No. 133A applied at
450 sq.ft./US gl. (11.0 m /L)
(When Applied to Douglas Fir)

Flame Spread Smoke Developed
55 170


Packaging: Standard packaging, 1 gallon, 5 gallon pails.

Click Here to be Emailed Material Safety Data Sheet (MSDS) Product Spec Sheet
Flammability Test    

PRECAUTIONS:
CAUTION! Do not take internally. Close container after each use.


KEEP OUT OF REACH OF CHILDREN. Protect from freezing
Information provided herein is based on information available at the time of printing. However, we make no guarantee or warranty that this product meet or complies with any federal, state local or foreign goverment code requirements. As we cannot anticipate all conditions under which this information and our products, or the products of other manufacturers in combination with our products may be used, we accept no responsibility for the results obtained by the application of this information or the safety and suitability of our products, either alone or or in combination for their own purposes. We sell our products without warranty or guarantee, and buyers and users assume all responsibility and liability for loss or damage arising from the use of this information, handling and use of our handling and use of our products whether used alone or in combination withe other products.



Fire Retardants, Inc.
123 Columbia Court North • Suite 201 • Chaska, MN 55318
Toll Free: 1-800-854-4957 · Tel: 952-448-7377 · Fax: 952-448-2613